package com.zj.interceptor;

import com.zj.common.Msg;
import com.zj.entity.UserInfo;
import com.zj.exception.LoginException;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Component
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        UserInfo userInfo =(UserInfo) request.getSession().getAttribute("userInfo");
        if (userInfo !=null){
            System.out.println("已在线"+request.getRequestURI());
            return true;
        }else {
            System.out.println("未在线"+request.getRequestURI());
            throw new LoginException(Msg.USER_IS_NOT_ONLINE);
           // return false;
        }
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
    }
}
